Abstract
Some 15 pre-humans, all Africans and tropical, are presently well known as well as some species of the genus Homo descending at least from one among the preceding ones. These two groups are distributed along the last 10 Myr. It is now easier to indicate the evolutive tendencies of the inflorescences of this bunch, and particularly Homo's ancestral ones, that is, development of the encephalon, decrease (or not) of the face, decrease (or not) of the jugal teeth, increase (or not) of the thickness of banded dental enamel, decrease (more or less rapid) of the various modes of locomotion to benefit bipedalism, etc., all of the tendencies of the human filiations testifying to an evident opening of the landscape.